Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 796 · 40 questions

What you do (Dry out, crystals in): 1. An adult pours warm water into a cup. 2. Stir in salt, a spoon at a time, until no more dissolves. 3. Pour the salty water into a shallow dish and lay a string in it. 4. Leave it on a sunny windowsill, out of reach of small children, and check each day.

1. 1.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a balloon (c) a shallow dish (d) a piece of string
2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) a shallow dish (d) a magnet
3. 3.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “sunny or shady place”? (a) we change it (b) we measure it (c) we keep it the same
4. 4.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a battery cell (c) yeast (d) a piece of string
5. 5.True or false: sand does not dissolve in water. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) chalk powder (b) sugar (c) small pebbles (d) sawdust
7. 7.🔍 Which is the odd one out? (a) sugar (b) table salt (c) cooking oil (d) baking soda
8. 8.🧺 Which of these is not needed for growing salt crystals? (a) a magnet (b) a spoon (c) warm water (d) salt
9. 9.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is the one thing we change. (a) True (b) False
10. 10.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) yeast (c) salt (d) a magnet
11. 11.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the kind of salt”? (a) we measure it (b) we keep it the same (c) we change it
12. 12.True or false: cooking an egg is a change that can be undone. (a) True (b) False
13. 13.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of salt”? (a) we keep it the same (b) we change it (c) we measure it
14. 14.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) sunny or shady place (b) the amount of water (c) the amount of salt (d) the same dish
15. 15.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) sunny or shady place (b) days to see crystals (c) the kind of salt (d) the amount of water
16. 16.🧈 Which of these is a change that can be undone? (a) melting ice (b) browning lemon ink (c) baking a cake (d) rusting iron
17. 17.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) sugar crystals form (c) salt crystals form (d) it turns to butter
18. 18.🧂 Which of these dissolves in water? (a) sugar (b) cooking oil (c) sand (d) small pebbles
19. 19.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
20. 20.True or false: sugar dissolves in water. (a) True (b) False
21. 21.True or false: cooking oil dissolves in water. (a) False (b) True
22. 22.🧂 Which of these dissolves in water? (a) sawdust (b) chalk powder (c) small pebbles (d) glucose powder
23. 23.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we keep it the same (b) we measure it (c) we change it
24. 24.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
25. 25.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
26. 26.True or false: salt is needed for growing salt crystals. (a) False (b) True
27. 27.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) bigger crystals (c) no crystals (d) smaller crystals
28. 28.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) next to the baby (c) on the edge of a table (d) in a busy doorway
29. 29.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
30. 30.🧂 Why do we stir in salt until no more will dissolve? (a) to change its colour (b) to make it very salty (c) to cool the water (d) to make it fizz
31. 31.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
32. 32.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) days to see crystals (b) the amount of water (c) sunny or shady place
33. 33.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
34. 34.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) empty (c) saturated (d) frozen
35. 35.🔍 Which is the odd one out? (a) sugar (b) baking soda (c) food colour (d) sand
36. 36.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) freezing water (c) rusting iron (d) baking a cake
37. 37.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) False (b) True
38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a balloon (c) a spoon (d) salt
39. 39.True or false: browning lemon ink is a change that can be undone. (a) True (b) False
40. 40.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (a) True (b) False

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